Tracheotomy 



347 



son this special location is not expedient it is preferable to 

 make the incision higher rather than nearer to the lungs. 



Fig. 167— The American Self-Retaining Tube. 



Second Step. — Exposing the Trachea. — The incision to 

 expose the trachea is made about one and a half inches long, 



Fig. 168— The Incision. 



through the skin and subjacent muscles directly along the 

 median line. Immediately over the trachea is a layer of areo- 



